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// Other services

Port 568: microsoft shuttle

Port 568 is assigned by IANA to ms-shuttle (microsoft shuttle).

568

How ms-shuttle works

Other services
client:568ms-shuttleresponse client:568ms-shuttleresponse

The client sends a request to port 568 and the ms-shuttle service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Well-known (0-1023)
Category
Other services
01 Security

Is port 568 dangerous?

We have no specific security note for port 568. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 568

ServicePortTransportDescriptionReferenceUpdated
ms-shuttle 568 TCP, UDP microsoft shuttle - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 568, and is it reachable?

Linux

sudo ss -ltnup 'sport = :568'      # process listening on 568
sudo lsof -nP -i :568

macOS

sudo lsof -nP -i :568

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 568 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 568
netstat -ano | findstr :568

From another machine

nmap -p 568 -sV <host>
sudo nmap -sU -p 568 <host>
nc -zv <host> 568

Block it in the firewall

sudo ufw deny 568/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 568" -Direction Inbound -LocalPort 568 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 568 used for?

Port 568 is assigned by IANA to ms-shuttle (microsoft shuttle).

Is port 568 TCP or UDP?

Port 568 is registered for TCP and UDP.

Is it safe to open port 568?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 568 is open?

On Linux run "ss -ltnup 'sport = :568'", on macOS "lsof -nP -i :568", and on Windows "netstat -ano | findstr :568" to see the local process. From another machine, "nmap -p 568 <host>" shows whether it is reachable.

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